Confidence: Medium · Source: FCC ULS · As of 2026-09-12
KJ4SCD callsign genealogy
Currently held by Williamson Jr, William R
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by KJ4SCD's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held KJ4SCD.
- Williamson Jr, William RALgranted 2020-12-01
All historical holders
Every license row we've seen with the callsign KJ4SCD, oldest first.
- Williamson Jr, William R AL2010-02-10 → cancelled 2010-11-23
- Davis Jr, Sam C GA2026-06-18 active